LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Oldsmobile >> 1991 >> Toronado Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Pcm/BCM >> Flow Charts For ECM/Pcm Codes: EO13 To EO69 >> Code EO42, Est Circuit Open Or Grounded >> Poor Connection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Poor Connection

Inspect ECM harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wire connection or damaged harness.

scientia non olet · About LEMON Manuals